CN103331350A - Cold expanding former - Google Patents
Cold expanding former Download PDFInfo
- Publication number
- CN103331350A CN103331350A CN2013103142584A CN201310314258A CN103331350A CN 103331350 A CN103331350 A CN 103331350A CN 2013103142584 A CN2013103142584 A CN 2013103142584A CN 201310314258 A CN201310314258 A CN 201310314258A CN 103331350 A CN103331350 A CN 103331350A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- ball
- cold expanding
- core
- expanding former
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a cold expanding former, which comprises a cylindrical sleeve, a handle core and at least one ball. The handle core is arranged in the sleeve; the sleeve is provided with at least one mounting hole penetrating through the outer wall of the sleeve; and the inner wall of the sleeve is provided with first threads. The handle core comprises an extrusion part, a locking part and a handle part, wherein the outer wall of the locking part is provided with second threads matched with the first threads; the front end of the locking part is connected with the extrusion part in a fastening manner; the rear end of the locking part is connected with the handle part in the fastening manner; the extrusion part is a cone of which the front part is small and the rear part is big; and the balls are movably arranged between the at least one mounting hole and the extrusion part of the handle core. The cold expanding former has the advantages that the structure is simple, the manufacturing cost is low and the operation is convenient, and bulges of which the structures are similar to a copper ring structure can be easily processed out in heat conduction pipes or other metal pipes. The cold expanding former is used for connecting pipelines, and intra-industry problems which cannot be solved all the time are solved.
Description
Technical field
The present invention relates to the pipeline interconnection technique, particularly relate to a kind of cold expanding former.
Background technology
Connection between the heat pipe of solar thermal collector normally connects by joint, gets loose for avoiding joint, usually, can a copper ring be set at heat pipe, be used for joint is clamped between two heat pipes, copper ring generally all is to be enclosed within on the heat pipe, but, metal has the characteristic of expanding with heat and contract with cold, and when weather turned cold, copper ring can get loose, in joint, drop out, cause pipeline leakage; Or directly copper ring is welded on the heat pipe, its operation easier is bigger, and cost is higher, and the less stable of welding, and of long duration, copper ring comes off easily.
For addressing this problem, best bet is that copper ring and heat pipe are arranged to integrated formed structure, but will how to realize this purpose, be an insurmountable difficult problem in the industry always, do not have a kind of instrument simple to operate, that cost is low can realize that copper ring and heat pipe are one-body molded.
Summary of the invention
Based on this, the invention reside in the defective that overcomes prior art, a kind of cold expanding former is provided, can on heat pipe or other metal tubes, directly process the projection of required similar copper ring structure, and also simple to operate, low cost of manufacture.
Its technical scheme is as follows:
A kind of cold expanding former, comprise sleeve cylindraceous, core, at least one ball, core is installed in the sleeve, this sleeve is provided with at least one installing hole that penetrates its outer wall, sleeve lining is provided with first screw thread, this core comprises press section, tight lock part, handle portion, the outer wall of tight lock part is provided with second screw thread with first screw thread coupling, front end and the press section of tight lock part are fastenedly connected, its rear end and handle portion are fastenedly connected, press section is pre-small post-large coniform, and ball is movably arranged on installing hole and between the press section of core.
Preferably, described ball is two, and described installing hole is two, and two installing holes are oppositely arranged on the same circumferential outer rim of sleeve.Two balls of positioned opposite on the same circumferential outer rim of sleeve, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to two balls simultaneously.
Preferably, described ball is four, and described installing hole is four, and four installing holes are arranged on the same circumferential outer rim of sleeve at interval uniformly.Arrange four balls on the same circumferential outer rim of sleeve evenly and at intervals, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to four balls simultaneously.
Preferably, described ball is three, and described installing hole is three, and three installing holes are arranged on the same circumferential outer rim of sleeve at interval uniformly.Arrange three balls on the same circumferential outer rim of sleeve evenly and at intervals, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to three balls simultaneously.
Preferably, described installing hole is outer little interior big bellmouth, and the bore dia of its outermost end is less than the diameter of ball, and the bore dia of its inner terminal is greater than the diameter of ball.The installing hole of this spline structure can avoid the movable ball of installing to drop out from installing hole.
Preferably, this core also comprises stop part, and this stop part is arranged on the press section front end, and the stop part outer wall is to the distance of the sleeve lining diameter less than ball.At the press section front end stop part is set, is used for preventing that ball from dropping out sleeve.
Preferably, this sleeve rear end is provided with the spacing shaft shoulder, is used for the restriction sleeve and stretches into heat pipe or the interior length of other metal tubes.
Preferably, this spacing shaft shoulder is provided with the locking hole of vertical its axis, after protruding moulding is finished, is used for the cold expanding former is withdrawed from heat pipe or other metal tubes.
Preferably, the front end of handle portion is provided with spacing end face, and the diameter of this spacing end face is greater than the internal diameter of sleeve, is used for restriction core is stretched into length in the sleeve, handle portion is intercepted outside sleeve the convenient handle portion application of force of giving.
Preferably, handle portion is L shaped structure, and is convenient to the handle portion application of force, and makes operation lighter.
Advantage or principle to the aforementioned techniques scheme describes below:
To put into sleeve to core, with sleeve with core integral body is put into heat pipe or other metal tubes, by rotating handles portion, second screw thread on the tight lock part and first screw thread of sleeve lining are screwed forward, thereby promote core motion forward in sleeve, press section outwards pushes ball gradually, make ball partly stretch out installing hole, when core and sleeve by after the screw-threaded coupling, core is driven the sleeve rotation, thereby drive the ball rotation, ball extruding heat conduction tube wall or other metal pipe-walls make its place's of being extruded cold expanding form the projection of similar copper ring structure, reverse rotation handle portion then, thereby pulling is core motion backward in sleeve, and ball conceals in the sleeve gradually, thereby can easily take out the cold expanding former in heat pipe or other metal tubes.
Described cold expanding former is simple in structure, and low cost of manufacture is easy to operate, can easily process the projection of similar copper ring structure in heat pipe or other metal tubes, is used for connecting between the pipeline, has solved in the industry an insurmountable difficult problem always.
Description of drawings
Fig. 1 is the cut-away section structural representation of the embodiment of the invention one described cold expanding former;
Fig. 2 is the schematic diagram of the processing heat-conducting copper pipe of the application embodiment of the invention one described cold expanding former;
Description of reference numerals:
1, sleeve, 2, core, 3, ball, 4, heat-conducting copper pipe, 5, projection, 110, installing hole, 120, locking hole, 130, the spacing shaft shoulder, 210, press section, 220, tight lock part, 230, handle portion, 231, spacing end face, 240, stop part.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
As shown in Figure 1, a kind of cold expanding former, comprise sleeve 1 cylindraceous, core 2, at least one ball 3, core 2 is installed in the sleeve 1, this sleeve 1 is provided with at least one installing hole that penetrates its outer wall 110, the inwall of sleeve 1 is provided with first screw thread, this core 2 comprises press section 210, tight lock part 220, handle portion 230, the outer wall of tight lock part 220 is provided with second screw thread with first screw thread coupling, the front end of tight lock part 220 and press section 210 are fastenedly connected, its rear end and handle portion 230 are fastenedly connected, and press section 210 is pre-small post-large coniform, and ball 3 is movably arranged on installing hole 110 and between the press section 210 of core.
The described ball 3 of present embodiment is two, installing hole 110 is two, two installing holes 110 are oppositely arranged on the same circumferential outer rim of sleeve 1, two balls 3 of positioned opposite on the same circumferential outer rim of sleeve 1, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to two balls simultaneously.
For avoiding the movable ball of installing 3 to drop out from installing hole 110, described installing hole 110 is outer little interior big bellmouth, and the bore dia of its outermost end is less than the diameter of ball 3, and the bore dia of its inner terminal is greater than the diameter of ball 3.
In order to prevent that ball 3 from dropping out sleeve 1, this core 2 also comprises stop part 240, this stop part 240 is arranged on press section 210 front ends, stop part 240 outer walls are to the distance of the sleeve 1 inwall diameter less than ball, ball 3 just is limited in the zone of action of press section 210 like this, is difficult for deviating from its installation site.
Stretch into length in heat pipe or other metal tubes in order to limit sleeve 1, this sleeve 1 rear end is provided with the spacing shaft shoulder 130, the diameter of the spacing shaft shoulder 130 is greater than the diameter of this heat pipe or other metal tubes, and the spacing shaft shoulder 130 is exactly that the projection of heat pipe or the formation of other metal tubes is to the distance of its fracture to the distance of ball 3.
In order to limit core 2 is stretched into length in the sleeve 1, the front end of handle portion 230 is provided with spacing end face 231, the diameter of this spacing end face 231 is greater than the internal diameter of sleeve 1, handle portion 230 is intercepted outside sleeve 1, convenient handle portion 230 application of forces of giving, and handle portion 230 is L shaped structure, and is not only convenient to the handle portion application of force, and makes operation lighter.
After protruding moulding is finished, for convenience the cold expanding former is withdrawed from heat pipe or other metal tubes, this spacing shaft shoulder 130 is provided with the locking hole 120 of vertical its axis, the locking rod inserts locking hole 120, with sleeve 1 location, the reverse rotation handle portion 230 then, a core 2 and sleeve 1 are unclamped, thereby withdraw from a core and sleeve.
As shown in Figure 2, be the schematic diagram of the processing heat-conducting copper pipe 4 of using the described cold expanding former of present embodiment, on the heat-conducting copper pipe 4 the cold expanding moulding projection 5 of similar copper ring structure, the height of this projection 5 is the length that ball 3 stretches out installing hole 110.
Operation principle: will put into sleeve 1 to core 2, with sleeve 1 with core 2 integral body are put into heat-conducting copper pipe 4, by rotating handles portion 230, second screw thread on the tight lock part 220 and first screw thread of sleeve 1 inwall are screwed forward, thereby promote core 2 motion forward in sleeve 1, press section 210 outwards pushes ball 3 gradually, make ball 3 parts stretch out installing hole 110, when core 2 and sleeve 1 being screwed spacing end face 231, core 2 is no longer travelled forward, core 2 is driven sleeve 1 rotation, thereby drive ball 3 rotations, ball 3 extruding heat-conducting copper pipes 4 walls make its place's of being extruded cold expanding form the projection 5 of similar copper ring structure, then the locking rod is inserted locking hole 120, make sleeve 1 location, reverse rotation handle portion 230 is core 2 motion backward in sleeve 1, ball 3 conceals in the sleeve 1 gradually, thereby can easily take out the cold expanding former in heat-conducting copper pipe 4.
The described cold expanding former of present embodiment is simple in structure, low cost of manufacture, easy to operate, can easily in heat pipe or other metal tubes, process the projection of similar copper ring structure, be used for connecting between the pipeline, and be not subjected to weather or piping material Effect on Performance and come off, solved in the industry an insurmountable difficult problem always.
Embodiment two
With reference to Fig. 1, present embodiment and embodiment one difference are that the described ball 3 of present embodiment is four, and installing hole 110 is four, and four installing holes 110 are arranged on the same circumferential outer rim of sleeve 1 at interval uniformly.Arrange four balls on the same circumferential outer rim of sleeve evenly and at intervals, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to four balls simultaneously.
Embodiment three
With reference to Fig. 1, present embodiment and embodiment one difference are that the described ball 3 of present embodiment is three, and described installing hole 110 is three, and three installing holes 110 are arranged on the same circumferential outer rim of sleeve 1 at interval uniformly.Arrange three balls on the same circumferential outer rim of sleeve evenly and at intervals, the shaping speed of projection is accelerated in the extruding that makes the heat pipe that is extruded or other metal tubes be subjected to three balls simultaneously.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. cold expanding former, it is characterized in that, comprise sleeve cylindraceous, core, at least one ball, core is installed in the sleeve, this sleeve is provided with at least one installing hole that penetrates its outer wall, sleeve lining is provided with first screw thread, this core comprises press section, tight lock part, handle portion, the outer wall of tight lock part is provided with second screw thread with first screw thread coupling, front end and the press section of tight lock part are fastenedly connected, its rear end and handle portion are fastenedly connected, and press section is pre-small post-large coniform, and ball is movably arranged on installing hole and between the press section of core.
2. cold expanding former according to claim 1 is characterized in that, described ball is two, and described installing hole is two, and two installing holes are oppositely arranged on the same circumferential outer rim of sleeve.
3. cold expanding former according to claim 1 is characterized in that, described ball is four, and described installing hole is four, and four installing holes are arranged on the same circumferential outer rim of sleeve at interval uniformly.
4. cold expanding former according to claim 1 is characterized in that, described ball is three, and described installing hole is three, and three installing holes are arranged on the same circumferential outer rim of sleeve at interval uniformly.
5. according to each described cold expanding former of claim 1-4, it is characterized in that described installing hole is outer little interior big bellmouth, the bore dia of its outermost end is less than the diameter of ball, and the bore dia of its inner terminal is greater than the diameter of ball.
6. cold expanding former according to claim 5 is characterized in that, this core also comprises stop part, and this stop part is arranged on the press section front end, and the stop part outer wall is to the distance of the sleeve lining diameter less than ball.
7. cold expanding former according to claim 6 is characterized in that, this sleeve rear end is provided with the spacing shaft shoulder.
8. cold expanding former according to claim 7 is characterized in that, this spacing shaft shoulder is provided with the locking hole of vertical its axis.
9. cold expanding former according to claim 8 is characterized in that, the front end of handle portion is provided with spacing end face, and the diameter of this spacing end face is greater than the internal diameter of sleeve.
10. cold expanding former according to claim 9 is characterized in that, handle portion is L shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314258.4A CN103331350B (en) | 2013-07-24 | 2013-07-24 | Cold expanding former |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314258.4A CN103331350B (en) | 2013-07-24 | 2013-07-24 | Cold expanding former |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103331350A true CN103331350A (en) | 2013-10-02 |
| CN103331350B CN103331350B (en) | 2015-07-29 |
Family
ID=49239592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310314258.4A Expired - Fee Related CN103331350B (en) | 2013-07-24 | 2013-07-24 | Cold expanding former |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103331350B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10109128A (en) * | 1996-10-04 | 1998-04-28 | Kihachiro Segawa | Plastic working machine for tubular work |
| CN2425724Y (en) * | 2000-04-27 | 2001-04-04 | 萍乡制冷设备厂 | Metal pipe convex groove shaping apparatus |
| CN2614809Y (en) * | 2003-04-23 | 2004-05-12 | 庞浩辉 | Convex collar forming tool for metal pipe |
| CN2629868Y (en) * | 2003-06-27 | 2004-08-04 | 庞浩辉 | Metal pipe corrugated ring shaping tool |
| CN203400963U (en) * | 2013-07-24 | 2014-01-22 | 广州市宏希太阳能设备有限公司 | Cold-expansion former |
-
2013
- 2013-07-24 CN CN201310314258.4A patent/CN103331350B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10109128A (en) * | 1996-10-04 | 1998-04-28 | Kihachiro Segawa | Plastic working machine for tubular work |
| CN2425724Y (en) * | 2000-04-27 | 2001-04-04 | 萍乡制冷设备厂 | Metal pipe convex groove shaping apparatus |
| CN2614809Y (en) * | 2003-04-23 | 2004-05-12 | 庞浩辉 | Convex collar forming tool for metal pipe |
| CN2629868Y (en) * | 2003-06-27 | 2004-08-04 | 庞浩辉 | Metal pipe corrugated ring shaping tool |
| CN203400963U (en) * | 2013-07-24 | 2014-01-22 | 广州市宏希太阳能设备有限公司 | Cold-expansion former |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103331350B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201261178Y (en) | Bush drawing device | |
| WO2019033462A1 (en) | Pipe fitting connecting method and connecting structure | |
| CN203400963U (en) | Cold-expansion former | |
| CN203792245U (en) | Guide device of heat exchanger poling | |
| CN103331350A (en) | Cold expanding former | |
| CN204403087U (en) | Many casing expandables bolt | |
| CN204430033U (en) | The hot tube expanding machine plug adopting latch to connect and bar jointing structure | |
| CN202266774U (en) | Water pipe telescopic connection device | |
| CN104901258A (en) | Hole plugging device for cable conduit | |
| CN203738695U (en) | Dismounting and mounting tool for inner wall opening die of double-wall corrugated pipe die | |
| CN204992506U (en) | Cable channel's tube hole plugging device | |
| CN211693965U (en) | Novel cutting sleeve type connecting structure for plastic pipe | |
| CN104989903B (en) | Irrigate thin-walled Zhi Guanyong socket joints bypass | |
| CN203546213U (en) | Spiral cooling device of polyester chip spinning equipment | |
| CN203189911U (en) | Pipeline rapid connector | |
| CN202579498U (en) | Fastened connection component for tubing | |
| CN201964059U (en) | Micro-irrigation pipe connector | |
| CN201152424Y (en) | Joint for water pipe | |
| CN204986171U (en) | Inside and outside silk straight joint of stainless steel | |
| CN206159714U (en) | A bypass for driping irrigation device | |
| KR200472519Y1 (en) | Adaptor for one-touch nipple | |
| CN103419170A (en) | Dismantling device and method for blind hole tool shaft | |
| CN203510709U (en) | Orifice expander for plastic pipe | |
| CN202182280U (en) | Inner-outer plugging tube piece | |
| CN103753482B (en) | The dismantling device of double-wall corrugated pipe mold inwall mouth die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 510540, No. two, No. 1, North Pearl Road, Pearl Industrial Park, Conghua, Guangdong, Guangzhou Applicant after: Guangzhou Hopesun Solar Equipment Co., Ltd. Address before: 510540, two, Lane 19, Taihe Town, Taihe Town, Baiyun District, Guangdong, Guangzhou Applicant before: Guangzhou Hopesun Solar Equipment Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20190724 |